We're Oskaloosa's Primary Geothermal Contractor! Oskaloosa, Kansas, residents have all kinds of reasons for wanting a geothermal heating and cooling system: phenomenal comfort all year – no matter how crazy the weather variations smooth operating efficiency energy performance (They’d be hard-pressed to find a more "green," more natural way to heat and cool their homes!) significant – often amazing – savings on their energy bills noteworthy installation and maintenance from Ground Source, Inc., Oskaloosa's geothermal professionals. Learn more about what a geothermal heating and cooling system can do to increase your family's comfort. Check out our Geothermal Savings Calculator. Then contact Ground Source, Inc.. We sell, install, and service WaterFurnace geothermal systems, the finest in the industry today.